Quadrox Export Quick Start Manual - Manual (Page 4)

Advanced Windows Media Player functions
In Windows Media Player 11, you can manipulate the video by enabling Enhancements :
You can also correct the video’s aspect ratio to the normal 4:3 format in case you are
playing back video from analogue cameras recorded in field resolution that seem
streched:
In the WMP 11 menu, choose
Tools > Options...
Choose the
Devices tab
Select Display
Click the
Properties button
Drag the slider
completely to the
right (factor 2).
This is a general setting for WMP and will persist for all movies until you return it
back to the default setting of factor 1.